Tipping lock for a garbage chute



5am, 28E, 958 J. P. HEKELAAR TIPPING LOCKJQR A GARBAGE CHUTE 2Sheets-Shee'?. l

v INVENTOR P; Hexe/amm Ava-arm s55 J. PQHEKELAAH A TIPPING Loox FOR AGARBAGE CHUTE JAA. 2s, A958 2 Sheets-Sheet 2 Filed Sept. 16. 1958JNVENTOR, .l P. Hexe/aar ATTONEgS ilnited States Patent O TIPPNG LOCK FRA GARBAGE CHUTE johannes Petrus Hekelaar, The Hague, Netherlands, as-

signor, by rnesne assignments, to N. V. Ontwerp- & ExploitatiebureauShunt, a limited liability company, The Hague, Netherlands ApplicationSeptember 6, 1956, Serial No. 608,37

5 Claims. (Cl. 193-34) This invention relates to a tiping lock for agarbage chute.

It is known to provide buildings divided into llats with a chute for theremoval of garbage, which chute is connected to the various ats by meansof closable apertures. On the means for closing said apertures highdemands are made, the most important ones of which are:

(a) A good sealing in order to prevent bad odours and bacteria fromentering the flat from the chute;

(b) The prevention of the chute being clogged up by too large piecesthrown into it;

(c) The prevention of garbage sticking in the lock;

(d) The ease of cleaning.

It is known to give said closure means the form of a tipping lock, thefront wall of which is formed as a cover closing the mouth of thegarbage chute. In the closed position the lock, therefore, is located ina branch of the chute. Upon being opened the lock tilts forward sothat-the garbage can be thrown into it, while when the lock is closedthe garbage will drop therefrom into the chute. The disadvantage of thisconstruction consists in that it is possible to throw through or pastthe lock too large and especially too long articles into the chute whichmay cause it to clog up, while in the opened position of the lock thereis a direct communication between the at and the chute, so that badodours and bacteria are apt to enter the flat. The object of theinvention is to obviate the said disadvantages.

The tipping lock according to the invention comprises a frame plateprovided with an aperture and adapted to be fitted about the mouth ofthe garbage chute, to the lower edge of which aperture an open shaft anda bent plate, are higedly mounted. If the chute is closed the shaft islocated behind the frame plate and then has a substantially verticalposition. The hinged connection with the frame plate is located at itsforemost lower edge. The bent plate is hingedly connected with the frameplate at the bend or in the immediate vicinity thereof. The foremostportion of said plate serves as a cover for the aperture in the frameplate and its rearmost portion serves as a bottom for the shaft. In itsclosed position the cover is entirely or substantially Vertical. Theangle between the foremost and the rearmost portion of said bent plateis larger than the angle between the lower edge and the front wall ofthe shaft.

if the shaft is in its vertical position it rests with an edge arrangedabout its front wall in a rabbet of the frame plate. If the cover islikewise closed, the bottom plate does not bear against the lower edgeof the shaft, so that articles deposited in the shaft may `drop from theshaft and in doing so they will be guided into the chute by the inclinedbottom plate.

Seeing that in said position both the front wall of the shaft and thecover bear against the frame plate there is a double closure of thechute, which is particularly favourable from a hygienic point of view.

When the cover is turned downwards the bottom plate rifice will moveupwards, will lie against the lower edge of the shaft and will take saidshaft along during the further downward movement of the cover, so thatthe shaft will tilt forward. A stop or like member limits the movementof the lock. The extreme position is the one in which the opening of thelock is located substantially beyond the frame plate. The shape of theshaft preferably is such that its rearmost upper edge is in theimmediate vicinity of the upper edge of the aperture in the frame platethen, while also the width of the shaft is such that it lits theaperture in the frame plate with relatively little play. Thus longarticles that are too large to be thrown into the lock are preventedfrom being inserted into the chute past the shaft, which might lead tothe chute being clogged up.

Preferably the bottom plate and the shaft are provided with lockingmeans such that they are locked to each other in the non-closed positionof the tipping lock. This renders it impossible to intentionally insertlong articles through the lock into the chute, while at the same timegases from the chute are prevented from entering the flat.

It is advantageous to so construct the means limiting the extent towhich the lock can be opened that, if desired, they can be renderedinoperative so that it is pos sible to tilt the lock entirely forwardfrom the branch of the chute for cleaning purposes.

The invention will be illustrated with reference to the embodiment shownin the accompanying drawing. The figures diagrammatically show verticalsectional views of the same apparatus in various positions, i. e.:

Figure l: lock closed.

Figure 2: cover partially open, bottom plate in contact with the shaftwhich still is in the vertical position.

Figure 3: the cover is opened slightly farther, the shaft has beentilted a little, the bottom plate is locked to the shaft.

Figure 4: the shaft is in the position for receiving the garbage.

Figure 5: the shaft is tilted entirely forward for cleaning purposes.

In the drawing the reference numeral l designates the garbage chutewhich by means of a branch 2 is connected to a flat. The mouth of thebranch is provided with a frame plate 3, provided with an aperture 23.To the edge of said aperture a bent plate 4, 5 an-d a shaft 9 aresecured by hinge means 7.

The frame plate is provided with a double rabbet 8 in which the outeredge 12 of the front wall of the shaft and the plate 4 can beaccommodated, so that in the closed position of the tipping lock shownin Figure l a particularly tight obturation is obtained. A knob 6facilitates the opening of the cover 4. As appears from Figure l theangle between the portions 4 and 5 of the plate is considerably largerthan the angle between the lower edge 10 of the shaft and its front walll2. In said position, therefore, the shaft 9 is open at its lower sideand garbage, if any, may drop from the lock into the chute and duringits fall it is guided towards the chute by the inclined bottom plate 5.

At the outside of a side wall of the shaft 9 a latch 14 pivotable abouta pin 17 is provided, while the cover plate is provided with aprojection 16 adapted to be engaged by the claw 15 of the latch.However, in the Vertical position of the shaft an extension 18 of saidlatch bears against a stop 13 provided on the inside of the frame plate,so that said latch is in a lifted position and therefore is inoperative.At the same time the shaft is provided on its outside with a latch 20pivotable about the pivot 19, which latch during the opening of the lockwill at a given moment contact the stop 13 and thus prevent thelock'from being opened farther. If it is desired to tilt the lock stillfarther e. g. for cleaning purposes the latch 20 must be lifted afterthe lock has been normally opened, whereupon the lock can be tiltedfarther forward.

The tigures show the tipping lock in various successive positions.

In Figure l the lock is closed. The front plate 4 bears in a rabbet 8 ofthe frame plate `3 and is kept in its closed position by a weight Z2secured to the bottom plate 5. The shaft 9 likewise bears in a rabbet ofthe frame plate with an edge provided on its front wall. In saidposition of the shaft a latch 14 pivoted to a side wall of said shaftbears with its extension 18 against a stop 13 provided on the inside ofthe frame plate, so that the end of the latch provided with the claw 15is in a slightly lifted position. For opening the lock the front plate 4is lowered by means of a knob 6. Ther bottom plate formed integral withsaid front plate is raised then and at a given moment it comes intoContact with the lower edge of the shaft 9, as shown in Figure 2. Duringa further movement of the front plate the bottom plate 5 will take alongthe shaft, so that said `shaft will start tilting forward. A slightmovement of said shaft is suicient to release the latch 14 so that withitsclaw 15 it will engage a projection 16 provided on the side edge 'ofthe bottom plate 5. As a result the shaft and the bottom plate arelocked to each other. A still further movement of the front plate causesthe shaft to tilt forward until the latch 20 likewise pivoted to a sidewall of the shaft engages the stop 13 and thus prevents the lock frombeing opened farther. Said position is shown in Figure 4. The mouth ofthe shaft is now entirely 1ocated outside the frame plate, so thatgarbage can easily be deposited in the shaft, whereupon the tipping lockis closed. During said closing movement the lock successively passesthrough the positions shown in Figures 4, 3, 2 and 1.

If it is desired to tilt the tipping lock still farther for ward, e. g.for cleaning purposes the foremost end of the latch 20 should be forceddownwardly when the 'shaft is in the position shown in Figure 4, so thatthe claw 21 of the latch is lifted and a further movement of the lock isrendered possible. A tipping lock tilted forward for cleaning purposesis shown in Figure 5.

It will be understood that the description of the tipping I lock givenhereinbefore is only meant to elucidate the inventionwith reference toan embodiment. Other embodiments are possible without departing from thescope of this invention.

I claim:

1. A tipping lock for a garbage chute comprising an apertured frameplate adapted to be fitted about the tipping aperture of said lock, inwhich frame plate movable parts are hingedly mounted in the immediatevicinity of the lower edge of the aperture in said frame plate,characterized in that said movable parts comprise a shaft and a bentplate, whose foremost portion is formed as a cover for the aperture inthe frame plate and whose rearmost portion serves as a bottom for saidshaft, the pivot of the shaft being located adjacent its foremost loweredge and the pivot of said plate being located adjacent its bend, theangle between the foremost and the rearmost portion ofv said plate beinglarger than the angle between the lower edge and the front wall of theshaft, the arrangement being such that when the cover is tilted shaftand will take the shaft along.

2. An arrangement according to claim l, characterized in that the shaftand the bottom plate are provided with cooperating locking means so thatin the non-closed position of the tipping shaft.

3, An arrangement according to claim 2, characterized in that saidlocking means comprise a latch pivotedto the shaft, which latch islifted in the closed position of the shaft by a stationary stop on theframe plate or on the wall of the chute, and a projection on the bottomplate adapted to be engaged by said latch when the shaft is tiltedforward.v

4. An arrangement according to claim 2, characterized by a stop whichwhen the tipping lock is opened prevents said lock from being tilted tobeyond the position in which the filling opening of the shaft is locatedentirely or substantially entirely beyond said frame plate.

5. An arrangement according to claim 4, characterized by means forrendering the stop inoperative, said means comprising a latch which inthe open position of the lock runs against the stop, said latch beingpivoted to the shaft and admitting of being lifted.

lock the bottom plate is locked to the No references cited.

